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Technology
evaluated
Overall Potential
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Barriers
Benefits (other than environmental)
Energy efficiency (single vehicles)
Status of development
Technology field
Vehicle - fix costs
Batteries (storage technology)
interesting
Double-layer capacitors (storage technology)
very promising
Superconducting Magnetic Energy Storage (storage technology)
not promising
PEM fuel cell
interesting
Natural gas
interesting
Hydrogen engine
interesting
Gas turbine
interesting
Magnetic levitation technology (maglev)
promising
Swissmetro
interesting
Coach insulation
promising
Modification of target temperature in passenger coaches
very promising
Smart windows
interesting
© UIC - International Union of Railways 2003